/*
 * Copyright (c) 2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/media/ImageFileWriter.h"

namespace alkes {

ImageFileWriter::ImageFileWriter(const char* filepath)
: filepath_(filepath)
, stream_(0)
{
}

ImageFileWriter::~ImageFileWriter()
{
    if (stream_)
    {
        delete stream_;
    }
}

void ImageFileWriter::writeScanline(PixelFormat /*format*/, const void* pixels, int32_t length, int32_t /*width*/, int32_t /*y*/)
{
    stream_->write(length, pixels);
}

bool ImageFileWriter::onBegin(PixelFormat format, int32_t pitch, int32_t width, int32_t height)
{
    FileStream* stream = new FileStream(filepath_, AL_ACCESS_WRITE, AL_OPEN_TRUNCATE);
    if (NULL == stream)
        return false;

    if (!stream->canWrite())
    {
        delete stream;
        return false;
    }

    ImageBufferHeader header;
    header.format = format;
    header.width = (uint16_t)width;
    header.height = (uint16_t)height;
    header.pitch = pitch;
    header.reserve = 0;

    // Write header
    stream->write(sizeof(header), &header);

    stream_ = stream;

    return true;
}

void ImageFileWriter::onEnd()
{
    if (stream_)
    {
        stream_->flush();
        stream_->close();
        delete stream_;
        stream_ = 0;
    }
}

}
